I believe Disney has thresholds in place to automatically charge the card on file once you hit a specific amount: value - $500, moderate - $1,000, and deluxe - $1,500. At least that is how I was operating. I could easily charge $300/$400 a day depending on my party size or what we purchased that day so I always just paid off the room pretty much every night. Now that I do split stays its not really as big of a concern, but I prefer taking 5 minutes to swipe my GC rather than having to work with the front desk on a refund.
I know
MDE is very buggy, but maybe the next feature added should be paying off your room with a gift card or CC via the app rather than waiting at the front desk. I would very much appreciate that enhancement!